From nobody Tue Feb 10 17:14:13 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1633383751619267.1951309017438; Mon, 4 Oct 2021 14:42:31 -0700 (PDT) Received: from localhost ([::1]:59084 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mXVjC-0001DE-HI for importer@patchew.org; Mon, 04 Oct 2021 17:42:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56904) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mXVNl-0002Oz-5Y for qemu-devel@nongnu.org; Mon, 04 Oct 2021 17:20:21 -0400 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]:35886 helo=mail.default.ilande.bv.iomart.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mXVNj-0002OG-Pj for qemu-devel@nongnu.org; Mon, 04 Oct 2021 17:20:20 -0400 Received: from [2a00:23c4:8b9d:4100:5d98:71b5:90ca:dad1] (helo=kentang.home) by mail.default.ilande.bv.iomart.io with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mXVNV-0008kv-R0; Mon, 04 Oct 2021 22:20:09 +0100 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, laurent@vivier.eu Date: Mon, 4 Oct 2021 22:19:26 +0100 Message-Id: <20211004211928.15803-11-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20211004211928.15803-1-mark.cave-ayland@ilande.co.uk> References: <20211004211928.15803-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 2a00:23c4:8b9d:4100:5d98:71b5:90ca:dad1 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH v2 10/12] macfb: fix 24-bit RGB pixel encoding X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.default.ilande.bv.iomart.io) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.default.ilande.bv.iomart.io X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1633383752521100001 Content-Type: text/plain; charset="utf-8" According to Apple Technical Note HW26: "Macintosh Quadra Built-In Video" t= he in-built framebuffer encodes each 24-bit pixel into 4 bytes. Adjust the 24-= bit RGB pixel encoding accordingly which agrees with the encoding expected by M= acOS when changing into 24-bit colour mode. Signed-off-by: Mark Cave-Ayland Reviewed-by: Laurent Vivier --- hw/display/macfb.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/hw/display/macfb.c b/hw/display/macfb.c index ae0cf02dff..ac5d46fa43 100644 --- a/hw/display/macfb.c +++ b/hw/display/macfb.c @@ -224,10 +224,10 @@ static void macfb_draw_line24(MacfbState *s, uint8_t = *d, uint32_t addr, int x; =20 for (x =3D 0; x < width; x++) { - r =3D macfb_read_byte(s, addr); - g =3D macfb_read_byte(s, addr + 1); - b =3D macfb_read_byte(s, addr + 2); - addr +=3D 3; + r =3D macfb_read_byte(s, addr + 1); + g =3D macfb_read_byte(s, addr + 2); + b =3D macfb_read_byte(s, addr + 3); + addr +=3D 4; =20 *(uint32_t *)d =3D rgb_to_pixel32(r, g, b); d +=3D 4; --=20 2.20.1